Some volumes include Membership directory as one issue; Vol. 16 (1924/1925) complete in 5 issues; Nov. 1952 called n.s. v.64:no.4, but constitutes n.s.v.44:no.4; v. for 1968-1969 called v.78-v.79 but constitute n.s.v.61-n.s.v.62